Solenoid-operated fuel-feeding device



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W. VAN GUILDER SOLENOID OPERATED FUEL FEEDING DEVICE Filed April 21, 1923 July 21, 1925.

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Patent ed July 1,925.5.

To all whom it name IS TA-TES V pnmmm r.

WALTER YAN GUI'LDEBQ OF OHICAGO; ILLINOIS; ASSIGNOR 'TO SPEEDOMETER CORPORATION, OF CHICAGO IlLLIKOIS, A. CQ'RPOBLATION" 01? V13];-

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SOLENOID-OPERATED rtrmrnnnrivo DEVICE,

Application filed Apr-u 21,- 1923, Serial No. 033,750.

may concern: Be it-known that I WALTER VAN- acitizen of the United States, residing 1n the city of Chicago, in the county of Cook.

and the State of Illinois, have invented-certain new and useful Improvements in Solenoid-Operated FueLFeedin Devices,of, which the following is a speci cation,-reference being had to'the-accompanying drawings, forminga-part thereof. The purpose of this-invention'is to provide a "means for operating avaeuum fuel feeding tank'by a solenoid-operated,- air-eX-.

i in the claims.

3 In the drawings:-'-- .7

1 FigureB is "there is re resented a familiar form of cuit of the engi'ne.

Figure 2' is an enlarged detail sectionalhausting device for producing a vacu um. It

consists in the elements and.features of construction shown and des'cribed, as indicated Figure 1 i sgavertical axial sectionof a vacuum tank-constructed for operation 1n accordance with this invention, the view also including a conventional diagram-of the the ignition cir wiring of the solenoid from view of the suction connection-"with the vacuum chamber and-the Valves controlling the same. I atop plan View of thetank shown-in-iFigure In the structure shown in the drawings vacuum tan 'comprising an outer or main fuel supply receptacle, A, and the inner and.

, uppervacuum chamber, B, The eapor cover member ofthis construction, for" the purpose of the present-invention comprises two plates, C andD,-mount'ed one upon the other and'hav'ing their proi'rimate faeespro vided with are istering. recesses, c and 'd,

forming a diap ragm-chamberof which the diaphragm, E, is marginally. engaged be tween the two lateswhich aresecu'red to-i gether andto t e'tank members, A and B,

"in such manner as to clamp-the diaphragm 'securelyand air-tight at said marginal engagement The upperplate, D, is extended upwardly near its renter .forming the, sole? "noid; housing, .D,"in Jjhich the solenoid tube, :F, and windingfG, contained-above lThe Gmwnn,

Section at the line, ion Figure 3;

from atnormal position o-f the diaphragm,v

part way into the solenoid tube, F subJeCt drawn further thereinto .when the Q phragm has a int, c, .formed throngh the plate, 0, for in ct from the vacuum chamber into the diaphragm chamber; and said late 7 has alsov a port, 0, leading outlra ially" from the diaphragm chamber .belowthe die phrag'rn' to; the atmosphere. The mentionedt port is provided with an inwardlyseating check" valve, 0," held normally seated by-"a light spring,'c The first men-- tioned port,"c-, is provided with .a' check valve, 7 a, seating" .downwardly,'-thati is,

outwardly with respect to 'theidi aphragm chamber,-its seat" being at the upper side 'of the'plate, C. This valve mounteda'nd positioned suitablyywithres' ect-to-its seat by means ofits stem,:0.,:gui ed in 8; lug, 0 which projects from the platen, iminedk ately below the diaphragmand overhang' mg the-port, c A lig'htspring, c scoi-le'daround the stem of this -valve,"o ireacting bet-ween its head and the 1ug,--a=*,;h 1ds it normally seated subject'to be openedbysuction when apartial vacuum is produced in the-vacuum chamber below the diiaplir'egin by the-lifting'pf the'fdiaphragm by. means energized.

tjively frequent interruption and Ire-estabof the solenoid core when the solenoid is 0 .The solenoid winding,G, is designed to I n a circuit provided with meansfor rela-' lishment, said circuit being indicated-by the i'n-le'adin wire, 9', connected with the i nition coil, and the return'Wire, g, lea 'in to one contact segmentof thetimer, conven tionally shown at This connection, it

It will be understood l that any 'con'venient form of commutator may be employed for solenoidcircuit.

will be seen, causes the solenoid tobe ener-. I glzed concurrently with thei itio'n of any. selected cylinder of a .fourecy inder engine.-

' Theopera'tion of this structure as a pump;;

ing' device will be readily understood to that the diaphragm and'solenoid core being normally at the position shown in Figure 1,

or at such position that thesoleno'id core has a substantial range of movement into the solenoid tube to reach the point-of longitu- 'dinal centrality Jof the core with the tube,

the energizing of the solenoid, causing the core to be' retracted and the diaphragm lifted atits center, will'produce a partial vacuum in the lower half of the diaphragm chamber andan exhaustion of air by suction from the vacuum chamber; and that tlie'solenoid-en -.ergizing circuit being then interrupted, the

return of the diaphragm and core'to original position will force the air thus drawn in from thevacuum chamber out through the atmosphere port, 0*, and past the check valve, said check valve serving to prevent atmosphere inlet duringthe retracting movement of the diaphragm and thereby cause that movement to draw in air from the vacuum chamber only; and that therepetition; of this action as frequently as the solenoid circuit is interrupted and re-established, will tend to produce a substantial'vacuum in the .7

vacuum chamber for the purpose of lifting the fuel thereinto. from alower. source of.

supply through the/fuel 'supply pipe,'T.

-fuel inlet through the cap,

In order that the vacuum chamber and its valves may function, in their necessary manner for athe usual operation of the vacuumtank, there is provided for the port, c in "addition to the check valve, c' in the diaphragm-chamber seating downwardly, the regular suction controlling jvalve J, in the vacuum chamber seating upwar y at the same port, 0 The two valves may be keptin alignment throughout-theirseveral movements by the expedient shownin Figure 2,.-

consisting in boring. the valve, 0 and its st'em axially and extending: a'slenderguide said bore. 7

- The vacuumchainber hasthe customary as. seen at the registering apertures, oi and c, in'the plates, C and.

vent port at M controlled by the valvefl,

the 'two valves, 1 and J, beingconnected for their proper 'simultaneous'and proper opp o site operation in 'the usual manner and means of these va'cuumfeed devices,- consisting, as shown, in the drawingsoftwo levers, O and P, having a fulcrum in common at 0, and having their opposite ends connected by snap springs, Q, the lever, P, being engaged spindle,'J from the end of the valve, J, into D, respectively, for a supply-pipe connection which-is seen at T, atmosphere loosely with the stems of both the valves, 0 being connected by a link, 7

said diaphragm chamber having below the diaphragm, inlet and 'outlet ports leading respectively from the vacuum chamber an to the atmosphere; one-way-seating valves at said ports opening for fluid movement through the diaphragm chamber from inlet to outlet thereof; avalve .for, additionally.

controlling the port between the diaphragm chamber and the vacuum chamber; a float in the vacuum chamber for controlling said last mentioned valve; andmeans for. interrupting the solenoid energizing circuit to cause alternate retraction and release ofthe' core and're'a'ction of the diaphragm.

2. In the construction defined in claim 1 formed by means of two plates mounted one upon the other, having cavities intheir proximate faces which form the diaphragm chamber, and having the diaphragm marginally engagedbetween them outside the foregoing," the diaphragm chamber being I circle of said facing cavities; an atmosphere inlet into the vacuum chamber outside the area of the diaphragm chamber, comprising registering ports in said .two diaphragm chamber members a. valve controlling said last mentioned atmosphere inlet, and means connecting said last mentioned valve and the valve mentioned for additionally controlling the diaphragm chamber inlet port, with the float for tion thereby. a

In testimony whereof, I have hereunto set my.hand at Chicago, Illinois,. this 16 day of April, 1923. a

WALTER VAN GUILDER.

their simultaneous opel.a-. 

